How to calculate moles in chemistry
[DOC File]UNIT 3 – WORKSHEET 1: MOLE PROBLEMS
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2.50 moles of aluminum hydroxide _____ Al(OH)3 = 27 + (3 x 16) + (3 x 1) = 78 g/mol. 2.50mol x 78 g = 195 g. 1 mol. b. 0.0125 moles of dinitrogen pentoxide _____ N2O5 = (2 x 14) + (5 x 16) = 108 g/mol. 0.0125mol x 108 g = 1.35 g. 1 mol. c. 3.12 x 1021 formula units of iron (III) sulfide _____ ...
[DOC File]Chemistry - Mole Notes
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For inorganic chemistry (what we are currently studying) the empirical formula is the same as the molecular formula. C. To calculate the empirical formula find the number of moles of each element in a compound then determine the ratio between the molar amounts.
[DOCX File]Mole Conversions Worksheet
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Chemistry 1B. Date: _____ High: MOL.2; Define one mole of a substance as 6.02 X 1023 particles. 10.1; High. MOL.3. Define atomic mass, formula mass and molecular mass. 10.2. High. MOL.4. Calculate the molar mass of a compound. 10.2. High. MOL.5. Use dimensional analysis to convert between the mass, number of moles and number of particles of a ...
[DOC File]Mole Calculations - Glenalmond Chemistry
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4. Calculate the mass of ammonia (NH3) produced when 280g of nitrogen react with plenty hydrogen [3] N2 + 3H2 ( 2NH3. 5. Define Relative Atomic Mass [2] 6. What is the Relative Atomic mass of Magnesium which has the isotopes 24Mg at 78.6% abundance, 25Mg at 10.1% abundance and 26Mg at 11.3% abundance. [2] 7.
[DOC File]Chemistry Concentrations Worksheet
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Calculate molality (moles of solute/kg of solvent). 5] 8.2 moles of ephedrine in 650 mL of isopropyl alcohol (density = 0.7855 g/mL) 6] 20.0 g of cane sugar, C12H22O11, dissolved in 175 grams of water.
[DOC File]Mole Calculation Worksheet
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15) How many grams are in 4.5 moles of sodium fluoride.? 16) How many moles are in 98.3 grams of aluminum hydroxide.? 17) How many grams are in 0.02 moles of beryllium iodide.? 18) How many moles are in 68 grams of copper (II) hydroxide.? 19) How many grams are in 3.3 moles of potassium sulfide.? 20) How many moles are in 1.2 x 103 grams of ...
[DOC File]Chemistry
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Calculate the number of moles of atoms in the following: 1. 3.01 1023 atoms of zinc (0.500) 2. 9.03 1023 atoms of S (1.50) 3. 1.806 1024 atoms of Ba (2.999) 10 Honors Chemistry. 2020-2021. Calculate the number of atoms in: 1. 0.5 mole of P4 molecules (1.2 1024) 2. 24 grams of O3 molecules (9.0 1023) 3. 84 grams of iron atoms (9.1 1023) 4. 96 ...
[DOC File]Chemistry Concentrations Worksheet
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Calculate molality (moles of solute/kg of solvent). 5] 8.2 moles of ephedrine in 650 mL of isopropyl alcohol (density = 0.7855 g/mL) (650 mL)(0.7855 g/ mL) = 510.6 g => 511 g
[DOC File]CHEMISTRY WORKSHEET # 2 MOLE PROBLEMS—THE MOLE …
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Chemistry B. Moles Packet INTRODUCTION TO MOLES. We are about to start on a unit of chemical calculations called “stoichiometry”. Stoichiometry is how we calculate the relationships between the amounts of reactants and the amounts of products. For example, if we know the amount of reactants we have, we can use stoichiometry to calculate how ...
[DOC File]Chapter 13 worksheet #1
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moles of solute / liter of solution (most commonly used unit of concentration) molality (m) moles of solute / kg of solvent . Compare to molarity and notice differences in the denominator. (L vs kg; solution vs. solvent) Molality is independent of temperature so it is used for calculating boiling point elevation. and freezing point depression.
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